Cataclysm No More: New Views on the Timing and Delivery of Lunar Impactors [0.03%]
月球形成新观点：月球物质来源及形成时间的再思考
Nicolle E B Zellner
Nicolle E B Zellner
If properly interpreted, the impact record of the Moon, Earth's nearest neighbour, can be used to gain insights into how the Earth has been influenced by impacting events since its formation ~4.5 billion years (Ga) ago. However, the nature ...
Walking over 4 Gya: Chemical Evolution from Photochemistry to Mineral and Organic Chemistries Leading to an RNA World [0.03%]
从光化学到矿物和有机化学的化学演化走向RNA世界
Kunio Kawamura,Marie-Christine Maurel
Kunio Kawamura
Here we overview the chemical evolution of RNA molecules from inorganic material through mineral-mediated RNA formation compatible with the plausible early Earth environments. Pathways from the gas-phase reaction to the formation of nucleot...
Transfer of Asymmetry between Proteinogenic Amino Acids under Harsh Conditions [0.03%]
恶劣条件下蛋白源氨基酸不对称性的转移
Arkadii V Tarasevych,Thomas Vives,Valeriy N Snytnikov et al.
Arkadii V Tarasevych et al.
The heating above 400 °C of serine, cysteine, selenocysteine and threonine leads to a complete decomposition of the amino acids and to the formation in low yields of alanine for the three formers and of 2-aminobutyric acid for the latter. ...
Anoxic and Oxic Oxidation of Rocks Containing Fe(II)Mg-Silicates and Fe(II)-Monosulfides as Source of Fe(III)-Minerals and Hydrogen. Geobiotropy [0.03%]
含Fe(II)橄榄石和黄铁矿的无氧和有氧氧化：Fe(III)矿物和氢气生成反应的比较研究
Marie-Paule Bassez
Marie-Paule Bassez
In this article, anoxic and oxic hydrolyses of rocks containing Fe (II) Mg-silicates and Fe (II)-monosulfides are analyzed at 25 °C and 250-350 °C. A table of the products is drawn. It is shown that magnetite and hydrogen can be produced ...
The Comparison of Hydrochloric Acid and Phosphoric Acid Treatments in the Preparation of Montmorillonite Catalysts for RNA Synthesis [0.03%]
盐酸和磷酸处理膨润土催化剂用于RNA合成的比较研究
Michael Frank Aldersley,Prakash C Joshi,Yixing Huang
Michael Frank Aldersley
The treatment of clay minerals with a preliminary acid wash and titration to pH 7 has proven to generate catalysts for the most interesting of oligomerization reactions in which activated RNA-nucleotides generate oligomers up to 40-mers. Si...
Kristin M Coari,Rebecca C Martin,Kopal Jain et al.
Kristin M Coari et al.
In order to establish an RNA world on early Earth, the nucleotides must form polymers through chemical rather than biochemical reactions. The polymerization products must be long enough to perform catalytic functions, including self-replica...
Carbonaceous Chondrite Meteorites: the Chronicle of a Potential Evolutionary Path between Stars and Life [0.03%]
碳质球粒陨石：星际与生命潜在演化路径的编年史
Sandra Pizzarello,Everett Shock
Sandra Pizzarello
The biogenic elements, H, C, N, O, P and S, have a long cosmic history, whose evolution can still be observed in diverse locales of the known universe, from interstellar clouds of gas and dust, to pre-stellar cores, nebulas, protoplanetary ...
Erratum to: An Experimental Framework for Generating Evolvable Chemical Systems in the Laboratory [0.03%]
纠错文章：实验框架下实验室中可进化化学体系的生成
David A Baum,Kalin Vetsigian
David A Baum
Chemical Analysis of a "Miller-Type" Complex Prebiotic Broth : Part II: Gas, Oil, Water and the Oil/Water-Interface [0.03%]
“米勒实验”型复配前生命汤的化学分析（下）：气体、石油、水及油/水界面
Sabrina Scherer,Eva Wollrab,Luca Codutti et al.
Sabrina Scherer et al.
We have analyzed the chemical variety obtained by Miller-Urey-type experiments using nuclear magnetic resonance (NMR) spectroscopy and coherent anti-Stokes Raman scattering (CARS) spectroscopy, gas chromatography followed by mass spectromet...